1.
Who is called the “Father of Genetics”?
2. The different alternatives or choices
for a gene are called _____________.
3. If you cross two DOMINANT looking
parents and get a RECESSIVE looking
offspring, the parents must both be
_____________
A. HOMOZYGOUS for the trait
B. HETEROZYGOUS for the trait
C. PURE for the trait
D. IMPOSSIBLE; Dominant looking parents can’t have
a recessive looking offspring
4. Crossing organisms from the F1
generation produces the _____
generation.
A.
B.
C.
D.
P2
F2
P1
None of these-you can’t cross F1
organisms with each other!
5. The passing of characteristics from
parent to offspring is called _______.
6. A gene choice that MASKS
ANOTHER choice for a trait is called
_____________.
7. Which of the following genotypes is
HETEROZYGOUS?
TT
bb
Mm
RR
gg
8. ____________ is another name for
HOMOZYGOUS.
9. PP and Pp pea plants both have
purple flowers. This is an example of
_________
A.Complete dominance
B. Incomplete dominance
C. Codominance
10. Which of the following genotypes is
HOMOZYGOUS?
Bb
Mm
Rr
TT
Ee
11. In pea plants, Tallness (T) is
dominant over shortness (t). Write the
genotype of a PURE SHORT organism.
12. Red flowered plants crossed with
white flowered plants producing PINK
flowered offspring is an example of
______________
A. Complete dominance
B. Incomplete dominance
C. Codominance
13. The way an organism looks is called
its ______________________.
14. A gene choice that is MASKED or
HIDDEN BY ANOTHER choice for a
trait is called _____________.
15. A red haired horse crossed with
white haired horse producing roan (red
and white haired) offspring OR a blood
type A mom and a blood type B dad
having a type AB baby are examples of
__________________
A.Complete dominance
B. Incomplete dominance
C. Codominance
16. A Reebop with the genotype Aa is
_______for antenna genes.
pure
OR
hybrid
17. Crossing organisms from the P1
generation produces the __ generation.
A. P2
B. F1
C. F2
D. None of these- you can’t cross P1
organisms with each other!
18. If a trait shows INCOMPLETE
DOMINANCE which genotype must an
organism be to show the
INTERMEDIATE BLENDED
PHENOTYPE?
A.
B.
C.
D.
PURE DOMINANT
PURE RECESSIVE
HOMOZYGOUS RECESSIVE
HETEROZYGOUS
19. A ________________ trait is
controlled by two or more genes.
20. The branch of biology that studies
how characteristics are transmitted
from parent to offspring is called
_______________.
A
B
C
D
E
21.Which of the cells above shows what
the surface of a blood cell looks like in
a person with a BO GENOTYPE?
22. Give an example of a POLYGENIC
trait in humans.
23. Which blood type is called the
“universal recipient"?
24. A ______________ trait (like A,
B, and O blood type) is controlled by
three or more alleles for the same
gene.
25. A characteristic that can be
observed such as hair color, seed
shape, or flower color is called a
______________
26. Which molecule found on the
surface of blood cells is responsible for
producing blood types?
27. Is the genotype in the
circled box heterozygous or
homozygous?
PEAS show COMPLETE DOMINANCE:
R= round
r= wrinkled
T= tall
t= short
Y= yellow peas
y= green peas
P= purple flower
p= white flowers
28. Give the GENOTYPE for a HOMOZYGOUS GREEN
pea plant.
29.
30.
31.
32.
Give the GENOTYPE for a HYBRID TALL pea plant.
Give the GENOTYPE for a PURE ROUND pea plant.
What is the phenotype of an Rr pea plant?
What is the phenotype of a pp pea plant?
33. Deafness in dogs is caused by a
recessive gene (d).
Use the Punnett square provided on the
back of your answer sheet to show the
offspring of a cross between a
HETEROZYGOUS HEARING
DOG and a DEAF dog.
34. The ability to roll your
tongue is DOMINANT (R)
over non-rolling (r).
Use the Punnett square
provided on the back of your answer
sheet to show the offspring of a cross
between A HOMOZYGOUS TONGUE
ROLLER and a PURE NON-ROLLER.
35. Having a “widow’s peak” is
DOMINANT (W) over a straight
hairline (w).
Use offspring of a cross between TWO
parents that are both HETEROZYGOUS
for the WIDOW’S PEAK allele.
36.
In humans which combination
of sex chromosomes makes you
a female?
37. X linked traits like hemophilia or
colorblindness show up more frequently
in ______________.
(males
females)
38. The chromosomes that DO NOT
determine sex are called
________________.